Improvement in self-lubricating- boxes for shafting



IMPROVEMENT IN SELF-LUBRICA'ING- BOXES FQR SI-IAI'TING.

Specjcatioaforming part of Letters Patent No. 77 ,261, dated April 28, 1868.

To all whom it may concern Beit known that I, WELLsLY W. CRANE, of the city of Auburn, in the county of Gayuga and State of New York, have invented a new and Improved Mode of Constructing Self-Lubricating Boxes for Shafting; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters ot' reference n'iarked thereon.

The nature of my invention consists in providing a more perfect self-lubricating device for conducting oil on and around a shaft and shaft-bearing, and returning the surplus oil back into the receiver without loss by leakage, such that a line of shafting may be run at from two to three hundred revolutions a minute for a year or more with but one supply of oil, although in common use every day.

Now, in order th-at others may know how to make and use my invention, l will proceed to describe its construction and mode of operation.

Figure 1 represents my hanger and upper section of the box, as shown in the drawings, and described in the specification of my former patent, dated June 4, 1867 5 Fig. 2, the lower section of the box, also shown and described as above; Fig. 3, the bearing in which the shaft rests; and Fig. 4t the shaftbearing placed bottom side up.

Fig. 4l, section 0, is the shaft-bearing with the tu'be O attached, and at A, Fig. 3, are the tube-opening and a receptacle cut at B. By this arrangement, as soon as the shaft is put in motion, it (the shaft) will form a vacuum within the tube C. The atmosphere pressure upon the surface of the oil in the receiver or lower section of the box E, will cause a continual flow of oil to pass through the tube C, and upon and around the shaft and shaftbearing, and return back over the sides and ends of the bearing-box, Fig. 3, into the receiver or lower section of the box E. The tube C, section 0, is designed to reach nearly to the bottom of the receiver, for the purpose of keeping' the end of the above tube below the surface of the oil.

I have said that the oil is returned over the sides and ends ofthe shaft-bearing box. Now, in order to retain all the surplus oil within the receiver or lower section of the box E, I make the box E of sufficient length beyond the shnftbearing box O, Fig. 3, to accomplish the above purpose, and to return the oil to the receiver or reservoir, to be taken up by the tube C, and used again and again until the whole of the lubricating qualities ot' the oil are absorbed.

New, when the lower section of the box and the shaft-bearing box are in place, and are bolted to the upper section by means of the bolts R and S, the box and self-lubricating device are complete and the two elements attained with which l set outthat is to say, a continual flow ol' oil upon and around the shaft and shaft-bearing, and the surplus oil returned to be used again without loss by leakage.

Having above minutely described the construction and mode of operating my invention, what I claim as new, and wish to secure by Letters Patent, is-

The combination ot' the loose hanging interior bearing 0, slotted in its center and provided with a depending tube, 0, the elongated receiver E, having a circumferential groove and suitable bearings for the journals of Vthe hanger 0 to rest on, the whole constructed-and used substantially as as specified.

WELLSLY W. CRANE. Witnesses:

HOLDEN B. WHITE, W. C. LooKE. 

